酸析—微电解—Fenton氧化预处理亚麻脱胶废水的研究

高浓度亚麻脱胶废水CODCr、色度都很高,不宜直接进行生物处理.试验采用酸析-微电解-Fenton氧化的预处理工艺,并对反应的影响因素进行了研究,试验结果表明,在pH=3,微电解90 min,H2O2投量1 500 mg/L,Fenton氧化120 min的条件下,CODCr去除率可以达到71.4%,色度去除率超过90%.同时该方法提高了废水的可生化性,有利于后续的生化处理.

Study on acidolysis-micro-electrolysis-Fenton oxidation process for pre-treatment of flax degumming wastewater

With very high COD_(Cr) concentration and high color,flax degumming wastewater is not suitable for biological treatment directly.According to wastewater quality,acidolysis-micro- electrolysis-Fenton oxidation processes were used to pretreat flax degumming wastewater and the influencing factors on this process are researched experimentally.The results showed that removal rates for COD_(Cr) and color reached 71.4% and 90% respectively under condition of influent pH value of 3,micro-electrolysis of 90 min,H_2O_2 dosage of 1 500 mg/L and Fenton oxidation of 120 min.It was proved that biodegradability of wastewater had been improved obviously by this process and the following biological treatment would be enhanced.